The Dow Chemical Company

Richard W Walter, Jr

Attila G Relenyi

Charles D Gartner

William Jack Kruper, Jr

Ravi B Shankar

Gerald F Koser

Tracy L Young

Anthony P Zelinko

Robert L Johnson

Dawn L Carsten

A color stable aqueous solution containing a relatively high concentration of sodium o-phenylphenate is described where stabilizing components include an oxygen scavenger and a free radical scavenger. The aqueous solutions of NaOPP prepared according to the present invention exhibit an absorbance at 400 nanometers of at most one-half the absorbance exhibited by untreated solutions after incubation for 72 hours at 44&deg; C. and 4 hours under ultraviolet light. The aqueous solution is useful as a concentrate that can be diluted to a desirable antimicrobial concentration level prior to application.

Low color and low haze formulations of sodium o-phenylphenate

Alkylthioalkylamine carbamic acid derivatives are prepared which correspond to the formula: ##STR1## wherein R and R.sub.1 are both independently alkyl groups containing from 6 to 16 carbon atoms, and m and n are both independently integers of from 2 to 3. Compositions containing these compounds inhibit the growth of organisms such as bacteria, yeast, fungi, mold, algae, mollusks, hydroids, or tunicates on surfaces.

Alkylthioethanamine carbamic acid derivatives and their use in biocidal

Alkylthioalkylamine carbamic acid derivatives are prepared which correspond to the formula: ##STR1## wherein R and R.sub.1 are both independently alkyl groups containing from 6 to 16 carbon atoms, and m and n are both independently integers of from 2 or 3. Compositions containing these compounds inhibit the growth of organisms such as bacteria, yeast, fungi, mold, algae, mollusks, hydroids, or tunicates on surfaces.

The present invention discloses the antimicrobial utility of certain iodonium ylide compounds. The particular iodonium ylide compounds are phenyl iodonium ylides having an ortho substituent that stabilizes the positive charge on the polyvalent iodine by a nonbonded electrostatic interaction. The polyvalent iodine is further stabilized by a cyclic 1,3-dicarbonyl anion.

Iodones and methods for antimicrobial use

Disclosed is a method for inhibiting microorganisms and/or controlling biofouling of cooling towers by use of certain alkylthioalkylamines such as n-decylthioethylamine.

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Midland, MI, United States of America

Richard W Walter, Jr